In net/if_ieee80211.h the following structure

	struct ieee80211_nwid {
		u_int8_t        i_len;
		u_int8_t        i_nwid[IEEE80211_NWID_LEN];
	};

can put i_nwid on an odd byte boundary, but the wi driver treats most data
as 16-bit data.  This will result in unaligned accesses which are fatal on
MIPS cpus.  

Are there any objections to bumping i_len to u_int16_t?  That would force
bumping the kernel rev since this affects the userland, too, right?